lc = 0.01;
lx = 0.1;
ly = 0.1;
lz = 0.1;
Point(1) = {0,0,0,lc};
Point(2) = {lx,0,0,lc};
Point(3) = {0,ly,0,lc};
Point(4) = {0,0,lz,lc};
Line(1) = {4,1};
Line(2) = {1,2};
Line(3) = {1,3};
Line(4) = {3,4};
Line(5) = {4,2};
Line(6) = {2,3};
Line Loop(7) = {5,-2,-1};
Plane Surface(8) = {7};
Line Loop(9) = {1,3,4};
Plane Surface(10) = {9};
Line Loop(11) = {3,-6,-2};
Plane Surface(12) = {11};
